I have had 2 purebred Arabians and a part-bred. My first Arab was difficult, but I was green and so was she. My expectations of myself and my horse at the time were unreasonable. I sold her because we moved to another country, but had the opportunity to ride her again when she and I were much older and more experienced. She was a great horse.
The Arab I have now is awesome. We are well matched to each other and have a good strong connection. He has loads of personality and truly wants to please. He is a joy to ride.
The message here is that Arabs are great horses, but as with any other breed, the skill level of the horse and the rider should be reasonably well matched.